(19)
(11) EP 1 148 553 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.04.2009 Bulletin 2009/18

(43) Date of publication A2:
24.10.2001 Bulletin 2001/43

(21) Application number: 01109522.1

(22) Date of filing: 17.04.2001
(51) International Patent Classification (IPC): 
H01L 27/15(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.04.2000 JP 2000114592

(71) Applicant: SEL SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Atsugi-shi, Kanagawa-ken 243-0036 (JP)

(72) Inventors:
  • Koyama, Jun, Semiconductor Energy Lab. Co., Ltd.
    Atsugi-shi, Kanagawa-ken 243-0036 (JP)
  • Inukai, Kazutaka, Semiconductor En. Lab. Co., Ltd.
    Atsugi-shi, Kanagawa-ken 243-0036 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Leopoldstraße 4
80802 München
80802 München (DE)

   


(54) Self-luminous device and electric machine using the same


(57) To provide a self-luminous device capable of clear, multi-gray scale, color display and an electric machine provided with the same. Gray scale display is attained by a time division driving method in which an EL element (109) provided in a pixel (104) is controlled to emit light or not to emit light by means of time, thereby avoiding being affected by fluctuation in characteristic in current controlling TFTs (108).










Search report